Patents by Inventor Mark Daniel Urbani
Mark Daniel Urbani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240055683Abstract: A method for the recovery of metals from a feed stream (1) containing one or more value metals, the method comprising: (i) passing the feed stream (1) to an alkaline leach (20) to form a slurry (5) including a pregnant leach liquor of soluble metal salts and a solid residue; (ii) separating the pregnant leach liquor (8) and the solid residue (7) of step (i); (iii) passing the separated pregnant leach liquor (8) of step (ii) to a solvent extraction step (42), wherein a loaded extractant (9) containing copper and nickel, and a raffinate (19) containing cobalt and lithium, are produced; (iv) recovering cobalt (24) from the raffinate (19) of step (iii); and (v) recovering lithium (38), ammonia (28) and ammonium chloride (39) from the cobalt depleted liquor (21) of step (iv).Type: ApplicationFiled: February 11, 2022Publication date: February 15, 2024Inventors: Mark Daniel Urbani, Gary Donald Johnson, Nicholas John Vines
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Publication number: 20230365421Abstract: A process for the recovery of lithium carbonate from a solution (1) containing a mixture of lithium sulfate and lithium hydroxide, the process comprising the precipitation of lithium carbonate (3) from the solution (1) containing a mixture of lithium sulfate and lithium hydroxide through the addition of carbon dioxide (2).Type: ApplicationFiled: April 1, 2022Publication date: November 16, 2023Inventors: Mark Daniel URBANI, Gary Donald JOHNSON, Nicholas John VINES
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Publication number: 20230227940Abstract: A method for the recovery of vanadium from a vanadium containing feed stream, the method comprising the steps of: subjecting the vanadium feed stream to a leach step, the leach step comprising contacting the vanadium feed stream with an alkaline carbonate leach solution to form a leach slurry comprising a pregnant leach solution containing vanadium and a solid residue; passing the leach slurry to a solid/liquid separation step to produce a pregnant leach solution containing vanadium; and recovering a vanadium product from the pregnant leach solution.Type: ApplicationFiled: February 5, 2021Publication date: July 20, 2023Inventors: David ROBINSON, Mark Daniel URBANI
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Publication number: 20220098049Abstract: A process for the recovery of lithium hydroxide from lithium sulfate containing solutions, the process characterised by the following method steps: precipitating ettringite from a lithium sulfate containing solution in a primary ettringite precipitation step (100); subsequent recovery of a liquor (7, 11) containing lithium hydroxide; and producing a lithium hydroxide monohydrate product (22) from the lithium hydroxide liquor (7, 11).Type: ApplicationFiled: February 5, 2020Publication date: March 31, 2022Inventors: Mark Daniel Urbani, Nicholas John Vines, Gary Donald Johnson
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Publication number: 20220056556Abstract: A method to produce a brine from mixed alum salts, the method comprising the steps of: (i) Dissolving or pulping alum salts (1) containing rubidium alum, cesium alum and/or potassium alum in water or a recycled liquor and adding a neutralising agent to precipitate (20) aluminium as aluminium hydroxide and some sulfate; (ii) Passing the product of step (i) to a solid liquid separation stage (21) to remove precipitated solids (5) from step (i); (iii) A decant or filtrate (6) from step (ii) is passed to a solvent extraction stage (24-27) whereby any contained cesium and rubidium is selectively extracted into the organic phase to form a loaded organic solution (16); (iv) Contacting the loaded organic solution (16) of step (iii) with a scrub solution (17), which is at a pH lower than the extraction pH, to effectively scrub co-loaded potassium from the organic phase; (v) Contacting the scrubbed organic (19) of step (iv) with formic acid (20) to strip cesium and rubidium from the organic, the stripped cesium and rubType: ApplicationFiled: September 25, 2019Publication date: February 24, 2022Applicant: LI-Technology Pty Ltd.Inventors: Gary Donald JOHNSON, Mark Daniel URBANI, Nicholas John VINES
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Publication number: 20220017989Abstract: A method for the recovery of metals from a feed stream containing one or more value metals and lithium, the method comprising: subjecting the feed stream to a sulphuric acid leach to form a slurry comprising a pregnant leach solution of soluble metal salts and a solid residue; separating the pregnant leach solution and the solid residue; subjecting the pregnant leach solution to one or more separate solvent extraction steps, wherein each solvent extraction step recovers one or more value metals from the pregnant leach solution, the remaining pregnant leach solution comprising lithium; and recovery of lithium from the pregnant leach solution.Type: ApplicationFiled: December 3, 2019Publication date: January 20, 2022Applicant: A.C.N. 630 589 0507 PTY LTDInventors: Gavin Beer, Mark Daniel Urbani
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Patent number: 10894997Abstract: A process for the recovery of lithium from minerals rich in lithium and phosphate, the process comprising passing an ore containing one or more minerals rich in lithium and phosphate to an acid leach step thereby producing a pregnant leach solution, subjecting the pregnant leach solution to a series of process steps by which one or more impurity elements are removed, and recovering lithium as a lithium containing salt product, wherein the series of process steps by which one or more impurity elements are removed includes a low pH impurity removal step conducted at an elevated temperature for the precipitation of one or more impurities.Type: GrantFiled: February 17, 2017Date of Patent: January 19, 2021Assignee: LI-Technology Pty Ltd.Inventors: Gary Donald Johnson, Mark Daniel Urbani, Nicholas John Vines
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Patent number: 10450630Abstract: A process for the recovery of lithium from lithium bearing mica rich minerals, the process comprising passing an ore containing one or more lithium bearing mica rich minerals to at least one pre-treatment step, passing the pre-treated ore to an acid leach step thereby producing a pregnant leach solution, subjecting the pregnant leach solution to a series of process steps in which one or more impurity metals are removed, and recovering lithium as a lithium containing salt product.Type: GrantFiled: October 9, 2015Date of Patent: October 22, 2019Assignee: Li-Technology Pty Ltd.Inventors: Gary Donald Johnson, Mark Daniel Urbani, Nicholas John Vines
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Publication number: 20190185963Abstract: A process for the recovery of lithium from minerals rich in lithium and phosphate, the process comprising passing an ore containing one or more minerals rich in lithium and phosphate to an acid leach step thereby producing a pregnant leach solution, subjecting the pregnant leach solution to a series of process steps by which one or more impurity elements are removed, and recovering lithium as a lithium containing salt product, wherein the series of process steps by which one or more impurity elements are removed includes a low pH impurity removal step conducted at an elevated temperature for the precipitation of one or more impurities.Type: ApplicationFiled: February 17, 2017Publication date: June 20, 2019Applicant: LI-Technology Pty Ltd.Inventors: Gary Donald JOHNSON, Mark Daniel URBANI, Nicholas John VINES
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Patent number: 9914646Abstract: A method for the processing of potassium containing materials comprises: (i) Separation of a potassium containing mineral from gangue minerals; (ii) Acid leaching whereby substantially all potassium, iron, aluminum and magnesium is solubilized and mixed potassium/iron double salt formed; (iii) Selectively crystallizing the mixed potassium/iron double salt formed in the leach step (ii); (iv) Second separation to separate the mixed potassium/iron double salt formed in step (iii); (v) Thermal decomposition to produce an iron oxide, a potassium salt and one or more phosphates; (vi) Leaching the product of the thermal decomposition; (vii) Third separation to separate the iron oxide and phosphate from the potassium salt; (viii) Recovering the potassium salt by crystallization; (ix) Separating the iron oxide and phosphate of step (vii) by leaching and subsequent solid liquid separation; and (x) Precipitating phosphate from liquor produced in step (ix) through the addition of a base.Type: GrantFiled: November 16, 2015Date of Patent: March 13, 2018Assignee: K-Max Pty Ltd.Inventors: Gary Donald Johnson, Mark Daniel Urbani, Nicholas John Vines
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Publication number: 20170320749Abstract: A method for the processing of potassium containing materials comprises: (i) Separation of a potassium containing mineral from gangue minerals; (ii) Acid leaching whereby substantially all potassium, iron, aluminium and magnesium is solubilised and mixed potassium/iron double salt formed; (iii) Selectively crystallising the mixed potassium/iron double salt formed in the leach step (ii); (iv) Second separation to separate the mixed potassium/iron double salt formed in step (iii); (v) Thermal decomposition to produce an iron oxide, a potassium salt and one or more phosphates; (vi) Leaching the product of the thermal decomposition; (vii) Third separation to separate the iron oxide and phosphate from the potassium salt; (viii) Recovering the potassium salt by crystallisation; (ix) Separating the iron oxide and phosphate of step (vii) by leaching and subsequent solid liquid separation; and (x) Precipitating phosphate from liquor produced in step (ix) through the addition of a base.Type: ApplicationFiled: November 16, 2015Publication date: November 9, 2017Applicant: K-Max Pty LtdInventors: Gary Donald JOHNSON, Mark Daniel URBANI, Nicholas John VINES
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Publication number: 20170233848Abstract: A process for the recovery of lithium from lithium bearing mica rich minerals, the process comprising passing an ore containing one or more lithium bearing mica rich minerals to at least one pre-treatment step, passing the pre-treated ore to an acid leach step thereby producing a pregnant leach solution, subjecting the pregnant leach solution to a series of process steps in which one or more impurity metals are removed, and recovering lithium as a lithium containing salt product.Type: ApplicationFiled: October 9, 2015Publication date: August 17, 2017Applicant: Li-Technology Pty LtdInventors: Gary Donald JOHNSON, Mark Daniel URBANI, Nicholas John VINES
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Patent number: 7935322Abstract: A process for the separation of nickel, cobalt or both from impurity elements selected from one or more of calcium, magnesium, manganese and chloride contained in a leach solution, the process comprising the step of subjecting the leach solution to solvent extraction using a carboxylic acid (such as Versatic 10), a hydroxyoxime such as LIX 63, a kinetic accelerator such as TBP, and optionally a stabilizer.Type: GrantFiled: January 28, 2005Date of Patent: May 3, 2011Assignee: Commonwealth Scientific & Indistrial Research OrganisationInventors: Chu Yong Cheng, Mark Daniel Urbani
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Patent number: 7837959Abstract: A process for separating one or more metal ions forming a first group of metal ions such as copper, zinc and ferric ions, from one or more other metal ions forming a second group of metal ions such as cobalt and nickel, comprising: contacting an aqueous solution comprising said first and second groups of metal ions with an organic solution comprising a phosphinic acid and a hydroxyoxime to extract one of said groups of metal ions into the organic phase, and separating the organic and aqueous phases.Type: GrantFiled: September 23, 2005Date of Patent: November 23, 2010Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Chu Yong Cheng, Mark Daniel Urbani
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Publication number: 20080245734Abstract: A process for separating one or more metal ions forming a first group of metal ions such as copper, zinc and ferric ions, from one or more other metal ions forming a second group of metal ions such as cobalt and nickel, comprising: contacting an aqueous solution comprising said first and second groups of metal ions with an organic solution comprising a phosphinic acid and a hydroxyoxime to extract one of said groups of metal ions into the organic phase, and separating the organic and aqueous phases.Type: ApplicationFiled: September 23, 2005Publication date: October 9, 2008Inventors: Chu Yong Cheng, Mark Daniel Urbani
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Solvent Extraction Process For Separating Cobalt And/Or Manganese From Impurities In Leach Solutions
Publication number: 20080038168Abstract: A process for the separation of cobalt and/or manganese from impurity elements selected from one or more of calcium and magnesium contained in a leach solution, the process comprising the step of subjecting the leach solution to solvent extraction using an organic solution of a carboxylic acid such as Versatic 10 and a hydroxyoxime such as LIX 63, optionally together with a stabilzer.Type: ApplicationFiled: January 28, 2005Publication date: February 14, 2008Applicant: Commonwealth Scientific And Industrial Research OrganisationInventors: Chu Yong Cheng, Mark Daniel Urbani